| Prolonged weight-shift and altered spinal coordination during sit-to-stand in practitioners of the Alexander Technique. | |
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MedLine Citation:
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PMID: 21782443 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The Alexander Technique (AT) is used to improve postural and movement coordination and has been reported to be clinically beneficial, however its effect on movement coordination is not well-characterized. In this study we examined the sit-to-stand (STS) movement by comparing coordination (phasing, weight-shift and spinal movement) between AT teachers (n=15) and matched control subjects (n=14). We found AT teachers had a longer weight-shift (p<0.001) and shorter momentum transfer phase (p=0.01), than control subjects. AT teachers also increased vertical foot force monotonically, rather than unweighting the feet prior to seat-off, suggesting they generate less forward momentum with hip flexors. The prolonged weight-shift of AT teachers occurred over a greater range of trunk inclination, such that their weight shifted continuously onto the feet while bringing the body mass forward. Finally, AT teachers had greatly reduced spinal bending during STS (cervical, p<0.001; thoracic, p<0.001; lumbar, p<0.05). We hypothesize that the low hip joint stiffness and adaptive axial postural tone previously reported in AT teachers underlies this novel "continuous" STS strategy by facilitating eccentric contractions during weight-shift. |
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Authors:
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Timothy W Cacciatore; Victor S Gurfinkel; Fay B Horak; Brian L Day |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't Date: 2011-07-22 |
Journal Detail:
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Title: Gait & posture Volume: 34 ISSN: 1879-2219 ISO Abbreviation: Gait Posture Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-07 Completed Date: 2012-02-07 Revised Date: 2012-03-15 |
Medline Journal Info:
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Nlm Unique ID: 9416830 Medline TA: Gait Posture Country: England |
Other Details:
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Languages: eng Pagination: 496-501 Citation Subset: IM |
Copyright Information:
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Crown Copyright © 2011. Published by Elsevier B.V. All rights reserved. |
Affiliation:
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Neurological Sciences Institute, Oregon Health & Science University, Beaverton, OR, USA. t.cacciatore@ucl.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Biomechanics / physiology Body Weight Female Foot / physiology Hip Joint / physiology* Humans Lower Extremity / physiology* Male Middle Aged Movement / physiology* Postural Balance / physiology* Spine / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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F32 HD-008520/HD/NICHD NIH HHS; R37 AG006457-24/AG/NIA NIH HHS; R37 AG006457-27/AG/NIA NIH HHS; //Medical Research Council |
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